EP0886749B1 - Container with a continuous thermal zone boundary - Google Patents

Abstract

The invention concerns a double-walled container such as, for example, a housing or trough with inner and outer walls (1, 5) made of a material which is a good heat conductor. In order to enable the container to be produced more economically and more easily whilst retaining the interruption of the thermal boundary between the interior and exterior, it is characterized in that the cross-sectional area of the inner and/or outer walls (1, 5) is reduced in predetermined regions.

Description

The present invention relates to a insulated container, in particular in the form a housing for refrigerators and warmers is present, with an inner wall and an outer wall made of a thermally highly conductive material and with an interruption in the thermal connection between inner wall and outer wall.

For the one described in EP 0 206 258 Energy loss occurring over the refrigerator To prevent the inner wall from the outer wall, the so-called temperature bridge, d. H. a thermal Connection between the interior and the outer wall to be interrupted.

In a container known from US 2,254,604 this temperature bridge is interrupted by the Inner wall and the outer wall of the container on the thermal zone boundary are separated and in between with a thermally bad conductive connecting part, such as. B. one Konststoffschiene (profile) or one Sealing tape to be connected. there it is disadvantageous, however, that the Manufacturing effort is relatively large because of the parts consist of different materials and must be put together manually.

Therefore, the object of the present invention based on specifying a double-walled container, which is sufficiently thermally insulated and yet with not one at the thermal zone boundary broken wall inexpensively and with low assembly effort can be produced.

To accomplish this task is the Container according to the invention characterized that the inner wall and the outer wall in the area a thermal zone boundary in one piece are trained and the interruption of thermal connection between the inner wall and the outer wall is made at least partially by that cross-sectional areas of the inner wall and / or Outer wall are reduced.

By reducing the above Cross-sectional area becomes the thermal resistance increased and thus the energy loss effective reduced; at the same time there is no longer a need another, less thermally conductive Insert material and thus assembly also simplified.

The container is identified by an im Area of the thermal zone boundary in one piece. trained inner wall and outer wall. Through this seamless transition between the inner and the outer wall can be produced in one operation, so that an even more extensive Simplification of the production process and a further reduction in the Manufacturing expenses can be realized.

In a particularly preferred embodiment, the container is characterized by predetermined positions in the walls formed holes, which are in one row or in several Rows are arranged. The holes can be in a predetermined grid from each other be spaced. This embodiment allows easy editing of the Wall elements by punching, which can be largely automated. By training Holes in one or more rows can provide a sufficient reduction in thermal effective cross-section while maintaining the required mechanical stability be realized. By the given grid, in which the holes from each other are spaced, it becomes possible to suspend the holes according to the invention or fastening of other components such as door hinge, shelves, Struts, seals etc. to use and thus the manufacturing process still to further simplify.

Figur 1

einen Abschnitt eines Wandelements mit einer Unterbrechung der Temperaturbrücke in der im Stand der Technik bekannten Form;

Figur 2

eine Querschnittsansicht eines Wandelement-Abschnittes mit einer erfindungsgemäßen Unterbrechung der Temperaturbrücke; und

Figur 3

eine perspektivische Teilansicht eines erfindungsgemäßen Behälters.

The present invention is explained in more detail below with reference to the accompanying drawings. Show:

Figure 1

a portion of a wall element with an interruption of the temperature bridge in the form known in the prior art;

Figure 2

a cross-sectional view of a wall element section with an interruption of the temperature bridge according to the invention; and

Figure 3

a partial perspective view of a container according to the invention.

Figure 1 shows the arrangement known in the prior art with the inner wall 5, the Profile 3 from the thermally poorly conductive material and the outer wall 1. Here is the Temperature bridge between the thermally highly conductive inner wall 5 and the likewise thermally highly conductive outer wall 1 through the profile 3 in the area of thermal Zone boundary interrupted. The space 7 covered by this arrangement is through an isolator, e.g. Filled with polyurethane foam or glass wool mats.

Figure 2 shows a cross-sectional view of a wall structure according to the invention. The Inner wall 5 and outer wall 1 are integrally formed together. To reduce of the cross section, holes 9 are punched out in the inner wall 5 and in the outer wall 1 reduce the cross-section of the walls so that the thermal resistance is increased is, so that the energy loss via the temperature bridge is effectively limited. The Gap 7, which is bordered by the walls 1, 5, is in a known manner, e.g. With Filled with polyurethane foam or glass wool mats. If necessary, the holes 9 before Isolate e.g. with polyurethane foam, covered with a tape and thus the Prevents foam from escaping. In addition to the much easier option of Isolation is also considerably easier to manufacture, since the inner wall 5 and the Outer wall 1 are made in one piece, which is folded in a suitable manner, and thus has a significantly higher mechanical strength than that according to the state of technology combined three elements.

The holes 9 are preferably provided in the region of the thermal zone boundary in order to interrupt the temperature bridge as effectively as possible. This way Achieve efficiencies equal to those of interrupting the thermal zone boundary come close to a profile 3 made of a thermally poorly conductive material.

In Figure 3 is a partial spatial representation of a cabinet according to the invention shown. The inner walls 5, like the outer walls 1, have holes 9. This Holes 9 can be punched out during processing of the wall plate Manufacture of the inner wall and the outer wall easily manufacture and can in if necessary several parallel rows.

The holes 9 with one another and the rows of holes with respect to one another can have predetermined distances have, which are chosen so that they can assemble door hinges without drilling allow additional holes 9. Furthermore, the assembly of shelves or striving possible in a simple way. If they have fasteners in the appropriate Have distance, so that clear in the subsequent manufacturing steps Simplification so that savings are possible.

In this embodiment of the container according to the invention, seals can also be used can be easily attached or replaced when they are on their back Have fasteners in the hole spacing.

The holes 9 can have the same shape as required: however, they can also differ from each other in shape and / or size. Thus, e.g. triangular, quadrangular, polygonal, round, non-round, elongated and / or of different sizes Holes may be provided to meet specific requirements.

Claims (3)

1. A heat insulated container, in particular provided in the form of a housing for refrigerators and warming cabinets having an interior wall and an exterior wall made from a well heat-conducting material and having a break in the thermal connection between the interior wall and the exterior wall,
   characterized in that
   the interior wall (5) and the exterior wall (1) are embodied in one piece in the region of a boundary of the thermal zone, and the interruption of the thermal connection between the interior wall (5) and the exterior wall (1) occurs at least partially such that the cross-sectional areas of the interior wall (5) and/or the exterior wall (1) are reduced.
2. The container according to claim 1, characterized in that apertures (9) are embodied in the interior wall (5) and/or in the exterior wall (1) in order to reduce the cross sectional surfaces, arranged in several rows or in a predetermined grid at a distance from one another.
3. The container according to claim 2, characterized in that the apertures (9) are provided with various regular and/or irregular shapes.

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